Hermione reads books for fun. Harry doesn't. That's all there is to it. As Hermione points out time and again.
Yeah but books wouldn't explain the amount of inside info at her young age. She knows too much of the culture. I believe something will come out in the last book.
The witch hunt(yuk yuk) for Sirius Black in GOF and OOP reminded me of the Clarence Thomas mess. It's not the weight of evidence but the seriousness of the charges that is important. I loved the "Oh whatever he died" response when the PM mentions Black to the Magic Minister in HBP. The Magic Minister should be a corporate case study in covering one's arse.